11- Find Echelon form for the following matrix a. find the basis of the row space of A b. find the basis of the column space of A c. find the basis of the null space of A 12-3- Find Echelon form for the following matrix A=2 a. find the basis of the row space of A b. find the basis of the column space of A c. find the basis of the null space of A -[ [2 13-Find Echelon form for the following matrix A-1 14 a. find the basis of the row space of A b. find the basis of the column space of A c. find the basis of the null space of A A = 1 -1 123 2 1 1 21 2 3 257 7 215 358